A New Cryptic Species of Diatraea (Lepidoptera: Crambidae: Crambinae) Feeding on Eastern Gama Grass and a Novel Host Association with a Braconid (Hymenoptera) in the United States

A new species, Diatraea mitteri Solis, that had been residing cryptically as Diatraea crambidoides (Grote), feeding on eastern gama grass (Tripsacum dactyloides (L.) L., is described. D. crambidoides occurs in the southern United States and Mexico and is an economic pest of corn (Zea mays L.). It ha...

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Bibliographic Details
Published in:Annals of the Entomological Society of America 2015-07, Vol.108 (4), p.648-659
Main Authors: Solis, M. Alma, Metz, M. A, Scheffer, S. J, Lewis, M. L, Kula, R. R, Springer, T. L
Format: Article
Language:English
Subjects:
Braconidae
corn
Crambidae
Diatraea
Diatraea crambidoides
grasses
Hymenoptera
Lepidoptera
new species
parasitoids
Pyraloidea
Saccharum officinarum
Sorghum
Sorghum bicolor
Sorghum halepense
southern cornstalk borer
sugarcane
SYSTEMATICS
Tripsacum dactyloides
Zea mays
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Description
Summary:A new species, Diatraea mitteri Solis, that had been residing cryptically as Diatraea crambidoides (Grote), feeding on eastern gama grass (Tripsacum dactyloides (L.) L., is described. D. crambidoides occurs in the southern United States and Mexico and is an economic pest of corn (Zea mays L.). It has been reported to also feed on sorghum (Sorghum bicolor (L.) Moench), johnsongrass (Sorghum halepense (L.) Persoon), and sugar cane (Saccharum officinarum L.). We confirm that D. crambidoides also feeds on eastern gama grass. Morphological and molecular characters support the status of D. mitteri as a new species. Parsimony analysis resulted in two clades corresponding to D. crambidoides and D. mitteri. We confirm the distribution of D. mitteri from Kansas, Oklahoma, and Texas, but its distribution could be as broad as the remaining range of eastern gama grass in the eastern United States. All the life stages are described and illustrated. A novel host association, Alabagrus imitatus Cresson (Hymenoptera: Braconidae), as a parasitoid of D. mitteri is reported.
ISSN:0013-8746
1938-2901
DOI:10.1093/aesa/sav049